Potato > Leaves > Leaves curled or distorted
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Potato Virus Y (PVY)
- Leaf symptoms vary greatly depending on strain of virus present
- Light and dark green mosaic pattern on leaves, occasionally leaves crinkle
- In severe cases, light brown rings form on tuber skin
- More information on Potato Virus Y (PVY)...
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- Leaves appear wrinkled from leafhopper feeding; may have a yellow tinge to the leaves
- PLH adults are lime green, slender, small (1/8 inch long), and wedge-shaped
- Leafhoppers are present from June-August
- More information on Potato Leafhopper...
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Potato Leaf Roll Virus (PLRV)
- Leaves are cupped upward and yellow (white potato) or reddish (red potato)
- Leaves become leathery and dry as infection progresses
- Plants are stunted
- Brown to black flecks can be seen in a net like pattern when the tuber is cut open
- More information on Potato Leaf Roll Virus (PLRV)...
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Candidatus Liberibacter spp.
- Aerial tubers form from main stem
- Leaves may be purple or yellow, appear scorched, and wilt
- Inside of potato is a mottled brown
- Vectored by the potato psyllid
- Currently not found in MN. If suspected, report it to the Minnesota Department of Agriculture at the "Arrest the Pest" Hotline: 651-201-6684 (metro) or 1-800-545-6684 (Greater Minnesota)
- More information on Zebra Chip...